1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* Zapping (TV viewer for the Gnome Desktop)
*
* Copyright (C) 2003 Michael H. Schimek
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: device.h,v 1.9 2006/05/14 13:47:55 mschimek Exp $ */
#ifndef DEVICE_H
#define DEVICE_H
#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#if defined (_IOC_SIZE) /* Linux */
#define IOCTL_ARG_SIZE(cmd) _IOC_SIZE (cmd)
#define IOCTL_READ(cmd) (_IOC_DIR (cmd) & _IOC_READ)
#define IOCTL_WRITE(cmd) (_IOC_DIR (cmd) & _IOC_WRITE)
#define IOCTL_READ_WRITE(cmd) (_IOC_DIR (cmd) == (_IOC_READ | _IOC_WRITE))
#define IOCTL_NUMBER(cmd) _IOC_NR (cmd)
#elif defined (IOCPARM_LEN) /* FreeBSD */
#define IOCTL_ARG_SIZE(cmd) IOCPARM_LEN (cmd)
#define IOCTL_READ(cmd) ((cmd) & IOC_OUT)
#define IOCTL_WRITE(cmd) ((cmd) & IOC_IN)
#define IOCTL_READ_WRITE(cmd) (((cmd) & IOC_DIRMASK) == (IOC_IN | IOC_OUT))
#define IOCTL_NUMBER(cmd) ((cmd) & 0xFF)
#else /* Don't worry, only used for debugging */
#define IOCTL_ARG_SIZE(cmd) 0
#define IOCTL_READ(cmd) 0
#define IOCTL_WRITE(cmd) 0
#define IOCTL_READ_WRITE(cmd) 0
#define IOCTL_NUMBER(cmd) 0
#endif
typedef void (ioctl_log_fn) (FILE * fp,
unsigned int cmd,
int rw,
void * arg);
extern void
fprint_symbolic (FILE * fp,
int mode,
unsigned long value,
...);
extern void
fprint_unknown_ioctl (FILE * fp,
unsigned int cmd,
void * arg);
static __inline__ void
timeval_add (struct timeval * sum,
const struct timeval * tv1,
const struct timeval * tv2)
{
long usec;
usec = tv1->tv_usec + tv2->tv_usec;
if (usec > 1000000) {
sum->tv_sec = tv1->tv_sec + tv2->tv_sec + 1;
sum->tv_usec = usec - 1000000;
} else {
sum->tv_sec = tv1->tv_sec + tv2->tv_sec;
sum->tv_usec = usec;
}
}
static __inline__ void
timeval_subtract (struct timeval * diff,
const struct timeval * tv1,
const struct timeval * tv2)
{
if (tv1->tv_usec < tv2->tv_usec) {
diff->tv_sec = tv1->tv_sec - tv2->tv_sec - 1;
diff->tv_usec = 1000000 + tv1->tv_usec - tv2->tv_usec;
} else {
diff->tv_sec = tv1->tv_sec - tv2->tv_sec;
diff->tv_usec = tv1->tv_usec - tv2->tv_usec;
}
}
static __inline__ long
timeval_cmp (const struct timeval * tv1,
const struct timeval * tv2)
{
if (tv1->tv_sec == tv2->tv_sec)
return tv1->tv_usec - tv2->tv_usec;
else
return tv1->tv_sec - tv2->tv_sec;
}
extern void
timeout_subtract_elapsed (struct timeval * result,
const struct timeval * timeout,
const struct timeval * now,
const struct timeval * start);
extern int
device_open (FILE * fp,
const char * pathname,
int flags,
mode_t mode);
extern int
device_close (FILE * fp,
int fd);
extern int
device_ioctl (FILE * fp,
ioctl_log_fn * fn,
int fd,
unsigned int cmd,
void * arg);
extern void *
device_mmap (FILE * fp,
void * start,
size_t length,
int prot,
int flags,
int fd,
off_t offset);
extern int
device_munmap (FILE * fp,
void * start,
size_t length);
extern ssize_t
device_read (FILE * fp,
int fd,
void * buf,
size_t count);
#endif /* DEVICE_H */
|
